Rotary sift-proof dispensing end closure for powder cans



Patented Apr. 21, 1953 ROTARY SIFT-PROOF DISPENSING END CLOSURE FOR POWDER CANS Robert Nyden, Manhasset, and Harry K. Dickerassignors to F. N. Burt man, Buffalo, N. Y.

Company, Inc., Buffalo, N. Y.,

of Delaware Original application 603,416. Divided an 1947, Serial No. 750,9

a corporation July 6, 1945, Serial No. d this application May 28,

2 Claims, (01. 222-542) This invention relates to improvements in containers or cans for toilet or cosmetic powder or the like, and more particularly to such containers principally constructed of paper, cardboard, fiberboard, and similar non-metallic materials, and having an improved end structure embodying a relatively rigid end plate or member constructed of metal or other relatively rigid material and adapted toform dispensing means for the container contents.

Anobject of the invention is to provide for containers of the class mentioned, an improved opening and closing device for controlling the dispens ing of the container contents and for providing a tight sealing joint for the dispensing opening when the controlling member is in closed position.

A further object of the invention is to provide for containers of the class mentioned, an improved reinforced dispensing structure resistant to distortion or displacement of parts for maintaining an effective anti-sift joint and to provide a rotary dispensin member of improved simple inexpensive structure and mounted for convenient operative access.

A further object is to provide for containers of the class mentioned, an improved end structure which is simplified so as to reduce production costs, to provide a practical and efficient siftproof structure which can be easily and quickly assembled, and is capable of rapid manufacture in large quantities by automatic machinery and bypractical factory methods.

Other objects and advantages of the invention willbe in part pointed out in the following detailed description of an illustrative but preferred embodiment thereof, and will be in part obvious as the disclosure proceeds.

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts, which will be exemplified in the construction hereinafter set forth and thescope of the application of which will be indicated in the claims.

For a more comprehensive disclosureof the nature, objects and advantages of the invention, reference is had to the following detailed disclosure of the illustrative embodiment thereof, and to the accompanying drawings in which:

Fig. 1 is a side elevation of a powder can or container embodying the invention; Fig. 2 is a top plan view thereof;

r 'Fig. 3 is an enlarged central longitudinal vertical section taken substantially on the line 33 of Fig.2.looking in the direction of the arrows;

and

Fig. 4 is a perspective disassembly View of the improved end structure.

This invention is fully disclosed in applicants prior application Serial No. 503,416, filed July 6, 1945, for Metal Closure for Powder Cans, which eventuated into Patent No. 2,538,946, on January 23, 1951. Therefore the present application is a division of said prior application.

Referring to the drawing for a detailed description of the illustrative embodiment of the invention there shown, the container or can has a tubular body or material-receiving portion l which is preferably constructed of non-metallic material such as paper, cardboard, fiberboard, plastic or the like, the enclosing walls whereof are of sumcient thickness to give the container the necessary strength and rigidity. While the container is shown as being circular in cross-section, it will be understood that this shape is merely illustrative and that the container may assume other crosssectional shapes, such as, square, rectangular, triangular, polygonal, and so forth.

The lower end of the container is closed by a bottom closure member 2 which, as shown, may be of thin metallic plate and is crimped or turned over the lower edge portion of the body I, as indicated at 3, so as to provide a tight, anti-sift, permanently attached closure. The bottom 2 of the container may assume any well known form since,

-" per se, it does not form a part of the present invention,

At its upper end the tubular body part I of the container has an opening which in the embodiment shown is of an area and diameter substantially the same as that of the body part. This upper opening may be utilized for filling the container with powder or other material, and is closed by the end structure indicated generally at 4 including an end closure plate 5 preferably of metal and having a depending attaching skirt flange 6 engaging in telescopingrelation with a metallic reinforcing ring or piece l attachedto the upper edge of the container side walls I. For the purposes of this invention, the connection of the end closure plate ii to the container may be of any approved construction, that shown in the said piror co-pending application being preferred.

The end closure member or disc 5 is preferably outwardly deflected or domed as indicated at 8,

and the domed portion is truncated or flattened as at 9 to provide a flat seat for a movable closure member indicated generally at ID. The flat seat 9 is reinforced and supported by the outwardly domed part 8 of the end plate the peripheral or surrounding side wall H of, which is outwardly controlling member.

tapered above the upper end of the container body and is transversely curved forming in effect an annular reinforcing rib or corrugation surroundin the fiat seat 9 thus reinforcing said seat and assisting in maintaining it in smooth or flat condition in use assuring the maintenance of a tight anti-sift joint between the seat and the rotary The outward tapering of the wal1 ii of the domed part 8 results in the flat seat 9 being of considerably less diameter than that of the container body, andthis flat seat is spaced some distance above the upper end of the container body.

The closure member H1 is mounted upon the fiat plate 9 by means of an attachment or rivet I2 extending through a central opening in the closure member, and through a corresponding central opening in the closure disc. The rivet l2 may be headed or otherwise formed at both the outside and inside of the end structure so as to retain the closure member in tight closing position against the flat plate 9 of the closure disc. This closure member, as shown, is preferably constructed of sheet metal the same as the end closure plate and the reinforcing piece I, and embodies the metallic part or disc l3 having the depending peripheral reinforcing skirt flange M which, as shown, is preferably provided with reinforcing corrugations l5 and i5. The corrugations I5 and I5 not only provide reinforcement for the closure disc Ii) but also provide a roughened or serrated gripping surface to facilitate manual turning of the closure disc to open and closed positions. The corrugations L5 and I5 also provide attaching lug formations at the inner side of the skirt flange I i for attachment of a sealing disc as later described.

On the underside of the metallic disc l3 and enclosed Within the depending flange 54 thereof is asealing member or disc 16 preferably made of paper, cardboard, fiberboard, or the like, and adapted to engage tightly against the upper smooth surface of the plate or seat 9 so as to form therewith a tight anti-sift joint. This sealing disc It is maintained tightly against the surface of the plate 9 by means of the securing rivet l2. It will be seen in Figs. 2 and 3 that the sealing disc 16 is provided at its outer edge portion with lugs or extensions l7 extending into the inner depressions in the flange 14 formed by the outwardly disposed corrugations l5, thus firmly attaching the sealing disc in its operative position against relative movement or rotation with reference to the disc I 3. 7 Also the spaces or depressions in the peripheral edge of the sealing disc it between the lugs 'l'! thereof receive the inwardly disposed corrugations I5 of the skirt flange H. The sealing disc l6 preferably fits closely within the flange l4 so as to prevent accidental separation from the disc [3 prior to mounting the closure member ii] in operative position. Also, it Will be noticed that the dispensing opening !8 of the end closure disc 5 is positioned to align with corresponding aligned dispensing openings i9 extending through both the metal disc I3 and the sealing disc is of the rotary closure member. When the sealing disc I6 is assembled in its operative position in the closure disc I 3., as shown in Figs, 2 and 3, the peripheral lugs I! engage the inner sides of the corrugations l5 to correctly position the parts with the dispensing openings !9 in alignment with each other. Thus, the closure member may be readily moved by rotation into opening or dispensing positionv wherein the :'dispensing openings l8 and P9 pending skirt flange for are aligned, and into tightly sealed closing position wherein the sealing disc I 6 is rotated to overlie the dispensing opening l8.

From the above disclosure it will be noticed that the improved structure is simple in nature so as to be inexpensive in production costs, and also is capable of manufacture by automatic machinery and factory methods in very large quantities. The tight anti-sift connection between the flat seat 9 and the sealing disc I 6 is effectively maintained by the reinforcing annular rib II which functions to resist bending or distortion of said seat. The peripheral margin of the rotary closure member I 0 and the depending skirt flange [4 thereof extend radially in spaced relation somewhat beyond "the adjacent surfaces of the end closure plate so as to form an overhanging gripping surface spaced outwardly radially from the adjacent outwardly tapered wall I I and spaced above the latter whereby said gripping surface is conveniently accessible for manual engagement in operating the rotary closure member. The centrally disposed pivotal supporting member or rivet I2 is also effective in holding the sealing disc I6 in tight sealing relation with the fiat supporting seat 9.

Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it isintended that all matter contained in the above description or shown in the accompanying drawing shal1 be interpreted as illustrative and not in a limiting sense.

The invention having thus been fully described,

the following is claimed:

1. In a dispensing closure for containers, in combination, an'end closure member for the container having an upwardly and outwardly domed part with a surroundin side wall inwardly offset from the outer wall of the container body and upwardly and inwardly tapered above the plane of the upper edge of said body outer wall, said end closure member having an upper sealing seat .positioned above said tapered side wall and provided with a dispensing opening, a rotary controlling member having a dispensing opening positioned for alignment with said first mentioned opening,

said controlling member having a plate with a peripheral dependin skirt flange extending around the outer margin of said plate, said skirt flange being positioned above said upwardly domed part of the end closure member to form a gripping member for use in rotating the controlling member, said depending skirt flange having interiorattaching lug formations, a sealing mem ber comprisin a substantially fiat disc without peripheral flanges or curls positioned atthe inner side of said rotary controlling member within said skirt flange and contacting with said sealing seat 7 to "form a tight closing seal, said disc terminating radially in a serrated peripheral edge,,;said edge having marginal lug formations cooperating with said interior attaching lug formations of said deretaining the sealing member in operative position, and a central pivot for mounting saidrotary controlling member.

2. In a dispensing closure for containers, in combination, an end closure member for the container having anupwardly and outwardly domed part positioned above the plane of the upper end of the outer wall of the container body andhavmg a surrounding side wall inwardly offset from said outer wallof said container-body andz bein'g upwardly and inwardly tapered above said body 5 said closure member having an upwardly disposed sealing seat above said inwardly tapered side wall and provided with a dispensing opening, said inwardly tapered side wall being transversely curved to form an annular reinforcing rib in said end closure member extending around and reinforcing said sealing seat, a rotary controlling member having a dispensing opening positioned for alignment with said dispensing opening of said sealing seat, said rotary controlling member having a supporting plate with a peripheral depending skirt flange extending around the outer margin of said plate, said skirt flange being positioned adjacent to and above said inwardly tapered wall of said domed part of the end closure member to form a gripping member for use in rotating the controlling member, said depending skirt flange having interior attaching lug formations, a sealing member comprising a substantially flat disc without peripheral flanges or curls positioned at the inner side of said rotary controlling member within said skirt flange and contacting with said sealing seat to form a, tight closing seal, said disc terminating radially in a serrated peripheral edge, said edge having marginal lug formations cooperating with said interior attaching lug formations of said depending skirt flange for retaining the sealing member in operative position, and a pivotal mounting member rotatably supporting said rotary controlling member.

ROBERT NYDEN. HARRY K. DICKERMAN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 765,260 White et a1 July 19, 1904 990,982 Hothersall May 2,. 1911 1,021,479 Reutter Mar. 26, 1912 1,512,540 Hothersall Oct. 21, 1924 1,653,471 Rutkowski Dec. 20, 1927 1,705,814 Hothersall Mar. 19, 1929 1,754,482 Nicholls Apr. 15, 1930 2,007,347 Rutkowski July 9, 1935 2,104,438 Richeson Jan. 4, 1938 2,336,882 Nyden Dec. 14, 1943 

